Data Overview

read_csv(here("data/character_list5.csv"),
                      progress = FALSE,
                      col_types = cols(
                                    script_id = col_integer(),
                                    imdb_character_name = col_character(),
                                    words = col_integer(),
                                    gender = col_character(),
                                    age = col_character()
                                    )) %>%
  mutate(age = as.numeric(age)) -> characters_list
characters_list %>% 
  glimpse()
Observations: 23,048
Variables: 5
$ script_id           <int> 280, 280, 280, 280, 280, 280, 280, 623, 623, 623, 623, 623, 623...
$ imdb_character_name <chr> "betty", "carolyn johnson", "eleanor", "francesca johns", "madg...
$ words               <int> 311, 873, 138, 2251, 190, 723, 1908, 328, 409, 347, 2020, 366, ...
$ gender              <chr> "f", "f", "f", "f", "f", "m", "m", "m", "f", "m", "m", "m", "m"...
$ age                 <dbl> 35, NA, NA, 46, 46, 38, 65, NA, 28, NA, 58, 53, 25, 39, 33, NA,...
read_csv(here("data/meta_data7.csv"),
                      progress = FALSE,
         col_types = cols(
                        script_id = col_integer(),
                        imdb_id = col_character(),
                        title = col_character(),
                        year = col_integer(),
                        gross = col_integer(),
                        lines_data = col_character()
                        )) -> meta_data
meta_data %>% 
  glimpse()
Observations: 2,000
Variables: 6
$ script_id  <int> 1534, 1512, 1514, 1517, 1520, 6537, 3778, 623, 1525, 6030, 625, 1509, 85...
$ imdb_id    <chr> "tt1022603", "tt0147800", "tt0417385", "tt2024544", "tt1542344", "tt0450...
$ title      <chr> "(500) Days of Summer", "10 Things I Hate About You", "12 and Holding", ...
$ year       <int> 2009, 1999, 2005, 2013, 2010, 2007, 1992, 2001, 2009, 2013, 1968, 2009, ...
$ gross      <int> 37, 65, NA, 60, 20, 91, 15, 37, 74, 80, 376, 192, 98, 204, 19, 59, 67, 3...
$ lines_data <chr> "74354452567747744433425777756577444344445644567454336755345277773423754...

Combinando Dados Originais

left_join(characters_list, 
          meta_data, 
          by=c("script_id")) %>%
  group_by(title, year) %>%
  drop_na(gross) %>%
  ungroup() -> scripts_data
scripts_data %>%
  glimpse()
Observations: 19,387
Variables: 10
$ script_id           <int> 280, 280, 280, 280, 280, 280, 280, 623, 623, 623, 623, 623, 623...
$ imdb_character_name <chr> "betty", "carolyn johnson", "eleanor", "francesca johns", "madg...
$ words               <int> 311, 873, 138, 2251, 190, 723, 1908, 328, 409, 347, 2020, 366, ...
$ gender              <chr> "f", "f", "f", "f", "f", "m", "m", "m", "f", "m", "m", "m", "m"...
$ age                 <dbl> 35, NA, NA, 46, 46, 38, 65, NA, 28, NA, 58, 53, 25, 39, 33, NA,...
$ imdb_id             <chr> "tt0112579", "tt0112579", "tt0112579", "tt0112579", "tt0112579"...
$ title               <chr> "The Bridges of Madison County", "The Bridges of Madison County...
$ year                <int> 1995, 1995, 1995, 1995, 1995, 1995, 1995, 2001, 2001, 2001, 200...
$ gross               <int> 142, 142, 142, 142, 142, 142, 142, 37, 37, 37, 37, 37, 37, 37, ...
$ lines_data          <chr> "43320234343434432034334343344334343434344343443443334344434443...

Words

scripts_data %>%
  group_by(title,year) %>%
  unique() %>%
  ggplot(aes(x=words,
             y=(..count..)/sum(..count..))) +
  geom_histogram(binwidth = 250,
                 boundary = 0,
                 fill = "grey",
                 color = "black")

scripts_data %>%
  group_by(title,year) %>%
  unique() %>%
  ggplot(aes(x="", 
             y=words)) +
  geom_violin(fill="grey",
               width=0.5)

Female Proportion

scripts_data %>%
  group_by(title, year) %>%
  mutate(fem_prop = (sum(gender == "f") / n()),
         man_prop = (1 - fem_prop)) %>% 
  ungroup() -> scripts_data
scripts_data %>%
  select(title,
         year,
         fem_prop,
         man_prop) %>%
  sample_n(10)
scripts_data %>%
  group_by(title,year) %>%
  unique() %>%
  ggplot(aes(x=fem_prop,
             y=(..count..)/sum(..count..))) +
  geom_histogram(binwidth = 0.05,
                 boundary = 0,
                 fill = "grey",
                 color = "black")

scripts_data %>%
  group_by(title,year) %>%
  unique() %>%
  ggplot(aes(x="", 
             y=fem_prop)) +
  geom_violin(fill="grey",
               width=0.5)

Movie Year

scripts_data %>%
  group_by(title,year) %>%
  unique() %>%
  ggplot(aes(x=year)) +
  geom_bar(fill = "grey",
           color = "black")

scripts_data %>%
  group_by(title,year) %>%
  unique() %>%
  ggplot(aes(x="", 
             y=year)) +
  geom_violin(fill="grey",
               width=0.5)

scripts_data %>%
  mutate(fem_words = ifelse(gender == "f",words,0),
         man_words = ifelse(gender == "m",words,0)) %>%
  group_by(title, year) %>%
  mutate(mean_fem_words = ifelse(sum(gender == "f") == 0, 0, sum(fem_words)/sum(gender == "f")),
         mean_man_words = ifelse(sum(gender == "m") == 0, 0, sum(man_words)/sum(gender == "m"))) %>% 
  ungroup()  -> scripts_data
scripts_data %>%
  select(title,
         year,
         mean_fem_words,
         mean_man_words) %>%
  sample_n(10)
scripts_data %>%
  group_by(title,year) %>%
  unique() %>%
  filter(!mean_fem_words == 0) %>%
  ggplot(aes(x=mean_fem_words,
             y=(..count..)/sum(..count..))) +
  geom_histogram(binwidth = 250,
                 boundary = 0,
                 fill = "grey",
                 color = "black")

scripts_data %>%
  group_by(title,year) %>%
  unique() %>%
  filter(!mean_fem_words == 0) %>%
  ggplot(aes(x="", 
             y=mean_fem_words)) +
  geom_violin(fill="grey",
               width=0.5)

scripts_data %>%
  group_by(title,year) %>%
  unique() %>%
  filter(!mean_man_words == 0) %>%
  ggplot(aes(x=mean_man_words,
             y=(..count..)/sum(..count..))) +
  geom_histogram(binwidth = 250,
                 boundary = 0,
                 fill = "grey",
                 color = "black")

scripts_data %>%
  group_by(title,year) %>%
  unique() %>%
  filter(!mean_man_words == 0) %>%
  ggplot(aes(x="", 
             y=mean_man_words)) +
  geom_violin(fill="grey",
               width=0.5)

Scale Data

scripts_data %>%
  group_by(title) %>%
  slice(1) %>%
  unique() %>%
  ungroup() %>%
  select(title,
         gross,
         fem_prop,
         mean_fem_words,
         mean_man_words) -> data
select(data, -title) %>%
mutate_all(funs(scale)) -> scaled_data
scaled_data %>% 
  sample_n(10)

Número K ótimo

GAP statistic

A GAP compara a solução do agrupamento com cada k com a solução em um dataset onde não há estrutura de grupos.

plot_clusgap = function(clusgap, title="Gap Statistic calculation results"){
    require("ggplot2")
    gstab = data.frame(clusgap$Tab, k=1:nrow(clusgap$Tab))
    p = ggplot(gstab, aes(k, gap)) + geom_line() + geom_point(size=5)
    p = p + geom_errorbar(aes(ymax=gap+SE.sim, ymin=gap-SE.sim), width = .2)
    p = p + ggtitle(title)
    return(p)
}
gaps <- scaled_data %>% 
    clusGap(FUN = kmeans,
            nstart = 20,
            K.max = 8,
            B = 200,
            iter.max=30)
Clustering k = 1,2,..., K.max (= 8): .. done
Bootstrapping, b = 1,2,..., B (= 200)  [one "." per sample]:
.................................................. 50 
.................................................. 100 
.................................................. 150 
.................................................. 200 
plot_clusgap(gaps)

Elbow Method

set.seed(123)
# Compute and plot wss for k = 2 to k = 15.
k.max <- 15
wss <- sapply(1:k.max, 
              function(k){kmeans(scaled_data, k, nstart=50,iter.max = 15 )$tot.withinss})
plot(1:k.max, wss,
     type="b", pch = 19, frame = FALSE, 
     xlab="Number of clusters K",
     ylab="Total within-clusters sum of squares")

  • Pelo Elbow method 4 ou 3 parece ser um bom número de grupos.

Silhouette

data(varespec)
dis = dist(scaled_data)^2
res = kmeans(scaled_data,3)
sil = silhouette (res$cluster, dis)
plot(sil)

Bayesian Information Criterion

fitting ...

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Bayesian Information Criterion (BIC): 
         EII       VII       EEI       VEI       EVI       VVI       EEE       EVE       VEE
1  -18865.22 -18865.22 -18887.46 -18887.46 -18887.46 -18887.46 -18610.48 -18610.48 -18610.48
2  -18262.02 -16988.77 -18088.63 -16709.17 -17196.30 -16364.22 -17998.98 -17581.43 -16556.64
3  -18200.17 -16450.13 -17725.19 -16291.72 -16454.57 -15698.71 -17896.01 -16432.33 -16120.76
4  -17473.88 -16185.65 -17036.25 -16101.97 -15921.11 -15392.05 -17932.51 -15823.41 -15936.34
5  -16980.30 -16049.44 -16986.57 -15796.79 -15834.37 -14956.79 -17321.75 -15712.44 -15852.69
6  -16972.30 -15824.88 -17021.85 -15749.23 -15710.02 -14873.43 -16914.70 -15464.39 -15617.91
7  -16668.28 -15775.42 -16503.67 -15609.43 -15420.13 -14753.73 -16947.67 -15367.99 -15540.84
8  -16706.92 -15736.25 -16539.42 -15527.14 -15377.54 -14728.17 -16983.81 -15306.82 -15532.64
9  -16618.78 -15596.71 -16570.05 -15386.84 -15384.21 -14714.68 -16548.00 -15278.38 -15399.31
10 -16653.20 -15495.69 -16607.27 -15340.75 -15270.18        NA -16585.13 -15250.94 -15289.93
11 -16690.01 -15511.87 -16644.35 -15336.24 -15251.42        NA -16623.16 -15215.33 -15281.81
12 -16727.33 -15525.67 -16681.40 -15359.94 -15196.26        NA -16660.21 -15134.28 -15281.13
13 -16372.34 -15477.71 -16315.78 -15332.31        NA        NA -16674.26 -15193.80 -15287.63
14 -16409.35 -15458.67 -16352.56 -15337.87        NA        NA -16711.24 -15112.53 -15317.18
15 -16425.49 -15449.87 -16301.45 -15311.57        NA        NA -16326.90 -15066.55 -15283.96
         VVE       EEV       VEV       EVV       VVV
1  -18610.48 -18610.48 -18610.48 -18610.48 -18610.48
2  -16380.77 -17178.37 -16089.82 -17131.66 -16081.48
3  -15938.44 -16749.13 -15720.33 -16647.31 -15585.70
4  -15685.08 -16380.53 -15414.24 -16078.33 -15286.91
5  -15551.47 -16262.19 -15266.60 -15979.00 -15073.02
6  -15444.62 -15901.60 -15201.81 -15622.14 -14904.70
7  -15182.10 -15830.44 -15065.93 -15488.26 -14896.85
8  -15163.46 -15658.25 -15041.34 -15438.44 -14832.57
9  -15197.77 -15726.99 -14986.94 -15445.79 -14822.44
10 -15110.11 -15650.00 -14963.05 -15401.84        NA
11 -15027.53 -15546.12 -15001.81 -15404.45        NA
12 -15015.23 -15429.65 -14973.12 -15351.73        NA
13 -15017.20 -15519.06 -14989.55 -15499.06        NA
14 -15006.81 -15452.36 -15064.14 -15436.73        NA
15 -15010.20 -15567.56 -15053.71 -15430.25        NA

Top 3 models based on the BIC criterion: 
    VVI,9     VVI,8     VVI,7 
-14714.68 -14728.17 -14753.73 
  • O Bayesian Information Criterion nos sugere K= {9,8,7} como melhores soluções
plot(d_clust$BIC)

  • Visualmente K= 3 e K = 4 representam o ganho mais significativo em termos de BIC (Bayesian Information Criterion)

Hubert Index e D Index

nb <- NbClust(scaled_data, diss=NULL, distance = "euclidean", 
              min.nc=2, max.nc=5, method = "kmeans", 
              index = "all", alphaBeale = 0.1)
*** : The Hubert index is a graphical method of determining the number of clusters.
                In the plot of Hubert index, we seek a significant knee that corresponds to a 
                significant increase of the value of the measure i.e the significant peak in Hubert
                index second differences plot. 
 

*** : The D index is a graphical method of determining the number of clusters. 
                In the plot of D index, we seek a significant knee (the significant peak in Dindex
                second differences plot) that corresponds to a significant increase of the value of
                the measure. 
 
******************************************************************* 
* Among all indices:                                                
* 5 proposed 2 as the best number of clusters 
* 10 proposed 3 as the best number of clusters 
* 1 proposed 4 as the best number of clusters 
* 7 proposed 5 as the best number of clusters 

                   ***** Conclusion *****                            
 
* According to the majority rule, the best number of clusters is  3 
 
 
******************************************************************* 

hist(nb$Best.nc[1,], breaks = max(na.omit(nb$Best.nc[1,])))

  • O índice de Hubert e o índice D sugerem K = 3 como a melhor solução

Trivia

# toclust = x %>% 
#     rownames_to_column(var = "language") %>% 
#     select(1:5) 
# dists = toclust %>% 
#     select(-language) %>% 
#     dist() # só para plotar silhouetas depois
# km = toclust %>% 
#     select(-language) %>% 
#     kmeans(centers = n_clusters, nstart = 20)
# km %>% 
#     augment(toclust) %>% 
#     gather(key = "variável", value = "valor", -language, -.cluster) %>% 
#     ggplot(aes(x = `variável`, y = valor, group = language, colour = .cluster)) + 
#     geom_point(alpha = 0.2) + 
#     geom_line(alpha = .5) + 
#     facet_wrap(~ .cluster) 
library(GGally)

Attaching package: ‘GGally’

The following object is masked from ‘package:dplyr’:

    nasa
data(crabs, package = "MASS")
ggparcoord(crabs, columns = 4:8, groupColumn = "sp")

library(GGally)
x <- rnorm(100)
d1 <- data.frame(x1 = x, x2 = rnorm(x), x3 = x)
d2 <- mutate(d1, x3 = -x)
ggparcoord(d1)

library(lattice)
parallelplot(d1)

scaled_data %>%
    kmeans(3, nstart=100) -> km
a <- autoplot(km, data=scaled_data, frame = TRUE)
ggplotly(a)
---
title: "Line distribution on cinema"
output:
  html_notebook:
    toc: yes
    toc_float: yes
  html_document:
    df_print: paged
    toc: yes
    toc_float: yes
---


```{r setup, echo=FALSE, warning=FALSE, message=FALSE}

library(here)
library(broom)
library(vegan)
library(mclust)
library(plotly)
library(NbClust)
library(lattice)
library(cluster)
library(tidyverse)
library(ggfortify)

theme_set(theme_bw())
```

# Data Overview

```{r, warning=FALSE}
read_csv(here("data/character_list5.csv"),
                      progress = FALSE,
                      col_types = cols(
                                    script_id = col_integer(),
                                    imdb_character_name = col_character(),
                                    words = col_integer(),
                                    gender = col_character(),
                                    age = col_character()
                                    )) %>%
  mutate(age = as.numeric(age)) -> characters_list

characters_list %>% 
  glimpse()

```

```{r}
read_csv(here("data/meta_data7.csv"),
                      progress = FALSE,
         col_types = cols(
                        script_id = col_integer(),
                        imdb_id = col_character(),
                        title = col_character(),
                        year = col_integer(),
                        gross = col_integer(),
                        lines_data = col_character()
                        )) -> meta_data

meta_data %>% 
  glimpse()

```

#### Combinando Dados Originais

```{r}
left_join(characters_list, 
          meta_data, 
          by=c("script_id")) %>%
  group_by(title, year) %>%
  drop_na(gross) %>%
  ungroup() -> scripts_data

scripts_data %>%
  glimpse()
```

## Words

```{r}
scripts_data %>%
  group_by(title,year) %>%
  unique() %>%
  ggplot(aes(x=words,
             y=(..count..)/sum(..count..))) +
  geom_histogram(binwidth = 250,
                 boundary = 0,
                 fill = "grey",
                 color = "black")
```

```{r}
scripts_data %>%
  group_by(title,year) %>%
  unique() %>%
  ggplot(aes(x="", 
             y=words)) +
  geom_violin(fill="grey",
               width=0.5)
```


## Female Proportion 

```{r}
scripts_data %>%
  group_by(title, year) %>%
  mutate(fem_prop = (sum(gender == "f") / n()),
         man_prop = (1 - fem_prop)) %>% 
  ungroup() -> scripts_data

scripts_data %>%
  select(title,
         year,
         fem_prop,
         man_prop) %>%
  sample_n(10)
```


```{r}
scripts_data %>%
  group_by(title,year) %>%
  unique() %>%
  ggplot(aes(x=fem_prop,
             y=(..count..)/sum(..count..))) +
  geom_histogram(binwidth = 0.05,
                 boundary = 0,
                 fill = "grey",
                 color = "black")
```

```{r}
scripts_data %>%
  group_by(title,year) %>%
  unique() %>%
  ggplot(aes(x="", 
             y=fem_prop)) +
  geom_violin(fill="grey",
               width=0.5)
```

## Movie Year 

```{r}
scripts_data %>%
  group_by(title,year) %>%
  unique() %>%
  ggplot(aes(x=year)) +
  geom_bar(fill = "grey",
           color = "black")
```

```{r}
scripts_data %>%
  group_by(title,year) %>%
  unique() %>%
  ggplot(aes(x="", 
             y=year)) +
  geom_violin(fill="grey",
               width=0.5)
```

```{r}
scripts_data %>%
  mutate(fem_words = ifelse(gender == "f",words,0),
         man_words = ifelse(gender == "m",words,0)) %>%
  group_by(title, year) %>%
  mutate(mean_fem_words = ifelse(sum(gender == "f") == 0, 0, sum(fem_words)/sum(gender == "f")),
         mean_man_words = ifelse(sum(gender == "m") == 0, 0, sum(man_words)/sum(gender == "m"))) %>% 
  ungroup()  -> scripts_data

scripts_data %>%
  select(title,
         year,
         mean_fem_words,
         mean_man_words) %>%
  sample_n(10)
```

```{r}
scripts_data %>%
  group_by(title,year) %>%
  unique() %>%
  filter(!mean_fem_words == 0) %>%
  ggplot(aes(x=mean_fem_words,
             y=(..count..)/sum(..count..))) +
  geom_histogram(binwidth = 250,
                 boundary = 0,
                 fill = "grey",
                 color = "black")
```

```{r}
scripts_data %>%
  group_by(title,year) %>%
  unique() %>%
  filter(!mean_fem_words == 0) %>%
  ggplot(aes(x="", 
             y=mean_fem_words)) +
  geom_violin(fill="grey",
               width=0.5)
```

```{r}
scripts_data %>%
  group_by(title,year) %>%
  unique() %>%
  filter(!mean_man_words == 0) %>%
  ggplot(aes(x=mean_man_words,
             y=(..count..)/sum(..count..))) +
  geom_histogram(binwidth = 250,
                 boundary = 0,
                 fill = "grey",
                 color = "black")
```

```{r}
scripts_data %>%
  group_by(title,year) %>%
  unique() %>%
  filter(!mean_man_words == 0) %>%
  ggplot(aes(x="", 
             y=mean_man_words)) +
  geom_violin(fill="grey",
               width=0.5)
```

## Scale Data

```{r}
scripts_data %>%
  group_by(title) %>%
  slice(1) %>%
  unique() %>%
  ungroup() %>%
  select(title,
         gross,
         fem_prop,
         mean_fem_words,
         mean_man_words) -> data

select(data, -title) %>%
mutate_all(funs(scale)) -> scaled_data

scaled_data %>% 
  sample_n(10)
```

#  Número K ótimo 

## GAP statistic

A GAP compara a solução do agrupamento com cada k com a solução em um dataset onde não há estrutura de grupos. 

```{r}
plot_clusgap = function(clusgap, title="Gap Statistic calculation results"){
    require("ggplot2")
    gstab = data.frame(clusgap$Tab, k=1:nrow(clusgap$Tab))
    p = ggplot(gstab, aes(k, gap)) + geom_line() + geom_point(size=5)
    p = p + geom_errorbar(aes(ymax=gap+SE.sim, ymin=gap-SE.sim), width = .2)
    p = p + ggtitle(title)
    return(p)
}
```

```{r}
gaps <- scaled_data %>% 
    clusGap(FUN = kmeans,
            nstart = 20,
            K.max = 8,
            B = 200,
            iter.max=30)
```

```{r}
plot_clusgap(gaps)
```

## Elbow Method

```{r}
set.seed(123)
# Compute and plot wss for k = 2 to k = 15.
k.max <- 15

wss <- sapply(1:k.max, 
              function(k){kmeans(scaled_data, k, nstart=50,iter.max = 15 )$tot.withinss})
plot(1:k.max, wss,
     type="b", pch = 19, frame = FALSE, 
     xlab="Number of clusters K",
     ylab="Total within-clusters sum of squares")
```

* Pelo Elbow method 4 ou 3 parece ser um bom número de grupos.

## Silhouette

```{r}
data(varespec)
dis = dist(scaled_data)^2
res = kmeans(scaled_data,3)
sil = silhouette (res$cluster, dis)
plot(sil)
```

## Bayesian Information Criterion

```{r echo=FALSE, message=FALSE}
d_clust <- Mclust(as.matrix(scaled_data), G=1:15, 
                  modelNames = mclust.options("emModelNames"))
d_clust$BIC
```

* O Bayesian Information Criterion nos sugere K= {9,8,7} como melhores soluções

```{r}
plot(d_clust$BIC)
```

* Visualmente K= 3 e K = 4 representam o ganho mais significativo em termos de BIC (Bayesian Information Criterion) 

## Hubert Index e D Index

```{r}
nb <- NbClust(scaled_data, diss=NULL, distance = "euclidean", 
              min.nc=2, max.nc=5, method = "kmeans", 
              index = "all", alphaBeale = 0.1)
hist(nb$Best.nc[1,], breaks = max(na.omit(nb$Best.nc[1,])))
```

* O índice de Hubert e o índice D sugerem K = 3  como a melhor solução

# Trivia

```{r}
# toclust = x %>% 
#     rownames_to_column(var = "language") %>% 
#     select(1:5) 
# dists = toclust %>% 
#     select(-language) %>% 
#     dist() # só para plotar silhouetas depois
# km = toclust %>% 
#     select(-language) %>% 
#     kmeans(centers = n_clusters, nstart = 20)
# km %>% 
#     augment(toclust) %>% 
#     gather(key = "variável", value = "valor", -language, -.cluster) %>% 
#     ggplot(aes(x = `variável`, y = valor, group = language, colour = .cluster)) + 
#     geom_point(alpha = 0.2) + 
#     geom_line(alpha = .5) + 
#     facet_wrap(~ .cluster) 
```

```{r}
library(GGally)
data(crabs, package = "MASS")
ggparcoord(crabs, columns = 4:8, groupColumn = "sp")
```

```{r}
library(GGally)
x <- rnorm(100)
d1 <- data.frame(x1 = x, x2 = rnorm(x), x3 = x)
d2 <- mutate(d1, x3 = -x)
ggparcoord(d1)
library(lattice)
parallelplot(d1)
```

```{r}
scaled_data %>%
    kmeans(3, nstart=100) -> km

p <- autoplot(km, data=scaled_data, frame = TRUE)

ggplotly(p)

```
